00329nas a2200145   4500000000100000000000100001008004100002100001300043700001300056700001400069245006700083300001200150490000700162022001400169       2017                            d1 aM. Eberg1 aR. Platt1 aK. Filion00aThe Estimation of Gestational Age at Birth in Database Studies  a854-8620 v28  a1044-3983